/* eslint-disable global-require */

// Do this as the first thing so that any code reading it knows the right env.
// RNV-ADDITION
import { getMergedConfig } from '../adapter';
// RNV-ADDITION
import { logError, logInfo, logWarning } from '@rnv/core';

process.env.BABEL_ENV = 'production';
process.env.NODE_ENV = 'production';

// Makes the script crash on unhandled rejections instead of silently
// ignoring them. In the future, promise rejections that are not handled will
// terminate the Node.js process with a non-zero exit code.
process.on('unhandledRejection', (err) => {
    throw err;
});

// Ensure environment variables are read.
require('../config/env');

const path = require('path');
const chalk = require('react-dev-utils/chalk');
const fs = require('fs-extra');
const bfj = require('bfj');
const webpack = require('webpack');
const checkRequiredFiles = require('react-dev-utils/checkRequiredFiles');
const formatWebpackMessages = require('react-dev-utils/formatWebpackMessages');
const printHostingInstructions = require('react-dev-utils/printHostingInstructions');
const FileSizeReporter = require('react-dev-utils/FileSizeReporter');
const printBuildError = require('react-dev-utils/printBuildError');
// We require that you explicitly set browsers and do not fall back to
// browserslist defaults.
const { checkBrowsers } = require('react-dev-utils/browsersHelper');
const paths = require('../config/paths');
// const configFactory = require('../config/webpack.config');
// eslint-disable-next-line no-undef
const config = getMergedConfig(require('../config/webpack.config')('production'), paths.appPath);

const { measureFileSizesBeforeBuild } = FileSizeReporter;
const { printFileSizesAfterBuild } = FileSizeReporter;
const useYarn = fs.existsSync(paths.yarnLockFile);

// These sizes are pretty large. We'll warn for bundles exceeding them.
const WARN_AFTER_BUNDLE_GZIP_SIZE = 512 * 1024;
const WARN_AFTER_CHUNK_GZIP_SIZE = 1024 * 1024;

const isInteractive = process.stdout.isTTY;

// Warn and crash if required files are missing
if (!checkRequiredFiles([paths.appHtml, paths.appIndexJs])) {
    process.exit(1);
}

const argv = process.argv.slice(2);
const writeStatsJson = argv.indexOf('--stats') !== -1;

// Generate configuration

export default async () =>
    checkBrowsers(paths.appPath, isInteractive)
        // First, read the current file sizes in build directory.
        // This lets us display how much they changed later.
        .then(() => measureFileSizesBeforeBuild(paths.appBuild))
        .then((previousFileSizes) => {
            // Remove all content but keep the directory so that
            // if you're in it, you don't end up in Trash
            fs.emptyDirSync(paths.appBuild);
            // Merge with the public folder
            copyPublicFolder();
            // Start the webpack build
            return build(previousFileSizes);
        })
        .then(
            ({ stats, previousFileSizes, warnings }) => {
                if (warnings.length) {
                    logWarning('Compiled with warnings.\n');
                    logInfo(warnings.join('\n\n'));
                    logInfo(
                        `\nSearch for the ${chalk.underline(
                            chalk.yellow('keywords')
                        )} to learn more about each warning.`
                    );
                    logInfo(`To ignore, add ${chalk.cyan('// eslint-disable-next-line')} to the line before.\n`);
                }

                logInfo('File sizes after gzip:\n');
                printFileSizesAfterBuild(
                    stats,
                    previousFileSizes,
                    paths.appBuild,
                    WARN_AFTER_BUNDLE_GZIP_SIZE,
                    WARN_AFTER_CHUNK_GZIP_SIZE
                );

                const appPackage = require(paths.appPackageJson);
                const publicUrl = paths.publicUrlOrPath;
                const { publicPath } = config.output;
                const buildFolder = path.relative(process.cwd(), paths.appBuild);
                printHostingInstructions(appPackage, publicUrl, publicPath, buildFolder, useYarn);
            },
            (err) => {
                const tscCompileOnError = process.env.TSC_COMPILE_ON_ERROR === 'true';
                if (tscCompileOnError) {
                    logWarning(
                        'Compiled with the following type errors (you may want to check these before deploying your app):\n'
                    );

                    printBuildError(err);
                } else {
                    logError('Failed to compile.\n');
                    printBuildError(err);
                    process.exit(1);
                }
            }
        )
        .catch((err) => {
            if (err && err.message) {
                logError(err.message);
            }
            process.exit(1);
        });

// Create the production build and print the deployment instructions.
function build(previousFileSizes) {
    const compiler = webpack(config);
    return new Promise((resolve, reject) => {
        compiler.run((err, stats) => {
            let messages;
            if (err) {
                if (!err.message) {
                    return reject(err);
                }

                let errMessage = err.message;

                // Add additional information for postcss errors
                if (Object.prototype.hasOwnProperty.call(err, 'postcssNode')) {
                    errMessage += `\nCompileError: Begins at CSS selector ${err.postcssNode.selector}`;
                }

                messages = formatWebpackMessages({
                    errors: [errMessage],
                    warnings: [],
                });
            } else {
                messages = formatWebpackMessages(stats.toJson({ all: false, warnings: true, errors: true }));
            }
            if (messages.errors.length) {
                // Only keep the first error. Others are often indicative
                // of the same problem, but confuse the reader with noise.
                if (messages.errors.length > 1) {
                    messages.errors.length = 1;
                }
                return reject(new Error(messages.errors.join('\n\n')));
            }
            if (
                process.env.CI &&
                (typeof process.env.CI !== 'string' || process.env.CI.toLowerCase() !== 'false') &&
                messages.warnings.length
            ) {
                // Ignore sourcemap warnings in CI builds. See #8227 for more info.
                const filteredWarnings = messages.warnings.filter((w) => !/Failed to parse source map/.test(w));
                if (filteredWarnings.length) {
                    logWarning(
                        '\nTreating warnings as errors because process.env.CI = true.\n' +
                            'Most CI servers set it automatically.\n'
                    );

                    return reject(new Error(filteredWarnings.join('\n\n')));
                }
            }

            const resolveArgs = {
                stats,
                previousFileSizes,
                warnings: messages.warnings,
            };

            if (writeStatsJson) {
                return bfj
                    .write(`${paths.appBuild}/bundle-stats.json`, stats.toJson())
                    .then(() => resolve(resolveArgs))
                    .catch((error) => reject(new Error(error)));
            }
            return resolve(resolveArgs);
        });
    });
}

function copyPublicFolder() {
    fs.copySync(paths.appPublic, paths.appBuild, {
        dereference: true,
        filter: (file) => file !== paths.appHtml,
    });
}
